NEET Chemistry | Daily MCQs Practice Questions | 19 July 2024 | NEET Exam

Assertion : T, P, V are called state variables or state function.
Reason : Their values depend on the state of the system and how it is reached.

Consider the following statements and select the correct option
Statement-I : The laws of thermodynamics deal with energy changes of microscopic systems involving a few number of molecules rather than macroscopic systems containing a large number of molecules.
Statement-II : Laws of thermodynamics apply only when a system is in equilibrium or moves from one equilibrium state to another equilibrium state.

Match the items in column I with relevant items in column II.

The sum of oxidation state of terminal carbon atoms in C₃O₂ (carbon suboxide) is :-

The rate constant for a first order reaction whose reaction rate is 0.06 M sec^-1 at 10 minutes and
0.02 M sec^-1 at 20 minutes will be nearly :

The oxidation potential of Hydrogen electrode dipped in a solution of pH = 4 at 25°C and ${\mathrm{P}}_{{\mathrm{H}}_2}$ = 1 atm would be :

Two liquids A and B on mixing show positive deviation from Raoult's law. If the boiling temperature of pure A and B are 340K and 390K respectively then the boiling temperature of resulting solution may be :

Assertion :- Mixture of chloroform and acetone forms a solution shows negative deviation from Raoult's Law.
Reason :- Entropy of mixing (ΔS_mix ) for above solution is less than zero.

Which of the following statement is incorrect :

Which of the following is correct?

The correct statement among the following regarding group 16 elements.

Statement-I: PH₃ has lower boiling point than NH₃ .
Statement-II: Unlike NH₃ , PH₃ molecules are not associated through hydrogen bonding in liquid state.

Which of the following is incorrect match?

Choose incorrect statement.

(1) Color of complex is complementary to that which is absorbed.
(2) Color of [Ti(H₂O)₆ ]⁺⁴ is violet.
(3) The crystal field theory attributes the color of coordination compounds to d-d transition of the electrones.
(4) Ruby is aluminium oxide (Al₂O₃ ) containing about 0.5 to 1% Cr⁺³ ions.